Add Compare The Equality Of Two Date Objects as a javascript til

README.md

@@ -9,7 +9,7 @@ and pairing with smart people at Hashrocket.
 
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-_962 TILs and counting..._
+_963 TILs and counting..._
 
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@@ -314,6 +314,7 @@ _962 TILs and counting..._
 - [Check Classes On A DOM Element](javascript/check-classes-on-a-dom-element.md)
 - [Check If Something Is An Array](javascript/check-if-something-is-an-array.md)
 - [Check The Password Confirmation With Yup](javascript/check-the-password-confirmation-with-yup.md)
+- [Compare The Equality Of Two Date Objects](javascript/compare-the-equality-of-two-date-objects.md)
 - [Computed Property Names In ES6](javascript/computed-property-names-in-es6.md)
 - [Conditionally Include Pairs In An Object](javascript/conditionally-include-pairs-in-an-object.md)
 - [Configure Jest To Run A Test Setup File](javascript/configure-jest-to-run-a-test-setup-file.md)

javascript/compare-the-equality-of-two-date-objects.md

@@ -0,0 +1,22 @@
+# Compare The Equality Of Two Date Objects
+
+Equality can always feel like a bit of a moving target in JavaScript. Comparing
+two objects, even if visually/conceptually identical, will resolve to being not
+equal.
+
+To compare two `Date` objects, you first need to convert them to something we
+can check for equality -- numbers. This can be done with `getTime()`.
+
+```javascript
+> now = Date.now()
+> today1 = new Date(now)
+> today2 = new Date(now)
+> today1 === today2
+false
+> today1.getTime() === today2.getTime()
+true
+```
+
+With `Date` objects, you can directly use `<`, `>`, `<=`, and `>=`.
+
+[source](https://stackoverflow.com/questions/492994/compare-two-dates-with-javascript)